Crossosomatales
Encyclopedia
The Crossosomatales are an order, newly recognized by the AGP II
, of flowering plant
s, included within the Rosids
, which are part of the eudicots
. The following three families are placed here:
The APG III system
of 2009 includes more families in this order:
Under the Cronquist system
these were placed in the Rosales
, Violales
, and Sapindales
, respectively.
In addition there are four genera, each placed within its own family, that are placed in this order by some researchers (see Matthews et al., below). These are Aphloia
, Geissoloma, Ixerba, and Strasburgeria.
Angiosperm Phylogeny Group
The Angiosperm Phylogeny Group, or APG, refers to an informal international group of systematic botanists who came together to try to establish a consensus on the taxonomy of flowering plants that would reflect new knowledge about plant relationships discovered through phylogenetic studies., three...
, of flowering plant
Flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...
s, included within the Rosids
Rosids
The rosids are members of a large clade of flowering plants, containing about 70,000 species, more than a quarter of all angiosperms. The clade is divided into 16 to 20 orders, depending upon circumscription and classification. These orders, in turn, together comprise about 140 families...
, which are part of the eudicots
Eudicots
Eudicots and Eudicotyledons are botanical terms introduced by Doyle & Hotton to refer to a monophyletic group of flowering plants that had been called tricolpates or non-Magnoliid dicots by previous authors...
. The following three families are placed here:
- Family CrossosomataceaeCrossosomataceaeCrossosomataceae is a small plant family, consisting of three genera of shrubs found only in the dry parts of the American southwest and Mexico.-External links:...
- Family StachyuraceaeStachyuraceaeStachyuraceae is a flowering plant family of shrubs and small trees native to East and Southeast Asia. The plants have leaves with serrate margins and flowers in long, hanging racemes.- References :* in Stevens, P. F. ....
- Family StaphyleaceaeStaphyleaceaeStaphyleaceae is a small family of five genera of flowering plants in the order Crossosomatales, native to the Northern Hemisphere and also in South America. The genus Staphylea, which gives the family its name, contains the "bladdernut" trees.Genera...
The APG III system
APG III system
The APG III system of flowering plant classification is the third version of a modern, mostly molecular-based, system of plant taxonomy...
of 2009 includes more families in this order:
- Family AphloiaceaeAphloiaceaeAphloiaceae Takht. 1985, is a monogeneric family of flowering plants. It contains only one species Aphloia theiformis Benn., a species of evergreen shrubs or small trees occurring in East Africa, Madagascar, the Mascarene Islands and the Seychelles....
- Family CrossosomataceaeCrossosomataceaeCrossosomataceae is a small plant family, consisting of three genera of shrubs found only in the dry parts of the American southwest and Mexico.-External links:...
- Family GeissolomataceaeGeissolomataceaeThe Geissolomataceae is a monotypic family of flowering plants native to the Cape Province of South Africa. The plants are xerophytic evergreen shrubs and are known to accumulate aluminum....
- Family Guamatelaceae
- Family StachyuraceaeStachyuraceaeStachyuraceae is a flowering plant family of shrubs and small trees native to East and Southeast Asia. The plants have leaves with serrate margins and flowers in long, hanging racemes.- References :* in Stevens, P. F. ....
- Family StaphyleaceaeStaphyleaceaeStaphyleaceae is a small family of five genera of flowering plants in the order Crossosomatales, native to the Northern Hemisphere and also in South America. The genus Staphylea, which gives the family its name, contains the "bladdernut" trees.Genera...
- Family Strasburgeriaceae (including the former Ixerbaceae)
Under the Cronquist system
Cronquist system
The Cronquist system is a taxonomic classification system of flowering plants. It was developed by Arthur Cronquist in his texts An Integrated System of Classification of Flowering Plants and The Evolution and Classification of Flowering Plants .Cronquist's system places flowering plants into two...
these were placed in the Rosales
Rosales
Rosales is an order of flowering plants. It is one of the four orders in the nitrogen fixing clade of the fabids and is sister to a clade consisting of Fagales and Cucurbitales. It contains about 7700 species, distributed into about 260 genera. Rosales comprises nine families, the type family...
, Violales
Violales
Violales is a botanical name of an order of flowering plants and takes its name from the included family Violaceae. The name has been used in several systems, although some systems used the name Parietales for similar groupings...
, and Sapindales
Sapindales
Sapindales is a botanical name for an order of flowering plants. Well-known members of Sapindales include citrus; maples, horse-chestnuts, lychees and rambutans; mangos and cashews; frankincense and myrrh; mahogany and neem....
, respectively.
In addition there are four genera, each placed within its own family, that are placed in this order by some researchers (see Matthews et al., below). These are Aphloia
Aphloiaceae
Aphloiaceae Takht. 1985, is a monogeneric family of flowering plants. It contains only one species Aphloia theiformis Benn., a species of evergreen shrubs or small trees occurring in East Africa, Madagascar, the Mascarene Islands and the Seychelles....
, Geissoloma, Ixerba, and Strasburgeria.
- Family AphloiaceaeAphloiaceaeAphloiaceae Takht. 1985, is a monogeneric family of flowering plants. It contains only one species Aphloia theiformis Benn., a species of evergreen shrubs or small trees occurring in East Africa, Madagascar, the Mascarene Islands and the Seychelles....
- Family GeissolomataceaeGeissolomataceaeThe Geissolomataceae is a monotypic family of flowering plants native to the Cape Province of South Africa. The plants are xerophytic evergreen shrubs and are known to accumulate aluminum....
- Family Ixerbaceae
- Family Strasburgeriaceae